Date
Fri, 30 Jul 2027
Start
12:00
Venue
Custer YMCA
Weatherford, Custer County
Countdown
July
The full 100 miles, starting at noon so you run through the night and into the next day. Go solo, or share the load with a relay team.
Key facts
0132-hour cutoff
02Relay teams of up to 5 runners
03Out-and-back course starting from Custer YMCA
Create a free training plan for the Lean Horse Ultra Marathon 161 km
7-day free trial, no card required
The course
The route
Custer YMCA
Distance161km
Total climb2,183m
StartElevation
0 kmDrag map to rotate157.5 km
Weather
Late-July, Custer YMCA
36°CTypical high
23°CTypical low
16°CColdest in 20 years
26%Days with rain
Highs around 36°C and lows around 23°C, but it has dropped to 16°C. Rain on 26% of days.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
OrganiserJim Hadd / Hadd To Dream LLC
Websiteleanhorseultra.com
Instagram@leanhorseultra
Running since2005
Training
Training for the Lean Horse Ultra Marathon 161 km
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a Lean Horse Ultra Marathon 161 km plan targets
Typical sessions
161 km with 2,183 m of climbing
Time on feet and fatigue resistance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long runs that build time on your feet
Tempo and threshold sessions to hold race pace
Hill reps and vert to prepare the climbs and descents
Back-to-back weekend runs for fatigue resistance
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your Lean Horse Ultra Marathon 161 km plan.
7-day free trial, no card required.
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